84819660 has 24 divisors (see below), whose sum is σ = 237495216. Its totient is φ = 22618560.

The previous prime is 84819643. The next prime is 84819661. The reversal of 84819660 is 6691848.

It is not an unprimeable number, because it can be changed into a prime (84819661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 706771 + ... + 706890.

It is an arithmetic number, because the mean of its divisors is an integer number (9895634).

Almost surely, 2^84819660 is an apocalyptic number.

It is an amenable number.

84819660 is an abundant number, since it is smaller than the sum of its proper divisors (152675556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84819660 is a wasteful number, since it uses less digits than its factorization.

84819660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413673 (or 1413671 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 84819660 is about 9209.7589545004. The cubic root of 84819660 is about 439.3717963556.

The spelling of 84819660 in words is "eighty-four million, eight hundred nineteen thousand, six hundred sixty".